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KNOWLEDGE HUB
Practical explanations for better data work
Articles on Excel, Power BI, Power Query, dashboards, and automation—kept focused enough to use in your next project.


Build a Live European Weather Forecast in Excel with Open-Meteo (part 1)
Connect Excel to the Open-Meteo API and build a refreshable seven-day European weather forecast with reusable Power Query M code, governance controls, KPI cards, and charts.

MirVel
Jun 234 min read


One Macro, One Full Excel Expenses Dashboard (with Claude AI)
Most expense reports start as a flat table — and stay that way. With a single VBA macro, you can turn that raw Data sheet into a polished, interactive dashboard, with no manual chart-building required. The macro does the heavy lifting. It formats your table, builds seven PivotTables, lays out six KPI cards (total spend, budget, approval rate and more), draws five charts, and wires up Month and Department slicers so everything filters together. A live status bar shows each ste

MirVel
Jun 81 min read


How to Use AI in Excel: Copilot, ChatGPT, and Smart Automation for Faster Analysis
AI is now built into Excel — from Copilot to ChatGPT-powered formulas. This guide covers the five most practical AI tools you can use today, with real examples and step-by-step instructions.

MirVel
Apr 205 min read


Excel Currency Converter & FX Dashboard – How‑to (Free download)
A ready-to-use Excel currency converter with a 90-day FX history, dropdown filters, KPI cards, and two interactive charts. Free download included with step-by-step setup instructions.

MirVel
Mar 272 min read


Excel Xmas Tree Decorator (No VBA) — A Tiny Game You Can Share With Colleagues
Want something festive, quick, and surprisingly useful to show what Excel can do beyond tables? This little Xmas Tree Decorator is a macro-free Excel mini-game built only with native features like dropdown lists, icons/emojis, conditional formatting, and formulas. It’s perfect as a fun office share, an Excel training warm-up, or a creative example for what’s possible with “just Excel”. 🎄🎄🎄 Would you like to download this Xmas fun tool for free? Click here. Check out some o

MirVel
Dec 21, 20253 min read


Famously Excel Functions: INDEX and MATCH – Usage, Best Examples, and Tips & Tricks
Excel users often seek efficient ways to retrieve data from large spreadsheets. Two powerful functions that stand out in this pursuit are...

MirVel
Sep 21, 20253 min read


The Ultimate Reusable Functions and Advanced Options Toolkit for Excel
Excel has been around for decades, but it’s still one of the most powerful tools for analytics, reporting, and automation. While most...

MirVel
Sep 12, 20253 min read


Excel Template: CRM Dashboard for Small Businesses
This tool is designed to help you manage customers, employees, services, and sales, all in one place, with automated dashboards and KPIs....

MirVel
Sep 8, 20253 min read


How to Create Dynamic Drop-Downs in Excel for Interactive Charts and Data Management
Understanding Dynamic Drop-Downs Dynamic drop-down lists update their contents automatically based on user selections, eliminating...

MirVel
Aug 7, 20252 min read


Mastering Excel Automation with Office Scripts for Enhanced Productivity
Ever find yourself repeating the same steps in Excel? Copying, pasting, and formatting the same data daily can be tedious. It eats up valuable time. What if Excel could do these boring tasks for you? Good news: it can! Microsoft Excel now includes Office Scripts to automate your daily spreadsheet tasks. Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 What Are Office Scripts? Automation is about saving time and avoiding mistakes. If you're do

MirVel
Jul 20, 20254 min read


Automatically Import Data from Email Links Using Power Query in Excel or Power BI
Have you ever received an email with a link to download a CSV or Excel file, and wished it could just go straight into your Excel sheet or Power BI dashboard? Good news: it can. With Power Query , you can connect directly to these file links—whether they’re public or require Microsoft login—and automatically load them into Excel or Power BI. This blog shows how to do it step by step. Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 Why Use Power

MirVel
Jul 11, 20253 min read


How to Convert Units in Excel
Excel’s CONVERT function makes it easy to switch between different units of measurement. This handy tool is ideal for school assignments,...

MirVel
Jun 14, 20253 min read


Power Query: Custom Function for Error Detection in Tables
When you're transforming data in Power BI or Excel using Power Query, you're bound to run into errors —mismatched data types, division by text, nulls, you name it. But instead of manually inspecting row by row, why not automate error detection with a custom Power Query function ? Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 In this blog post, I’ll walk you through a clean method to catch and analyze all row-level errors using Power Query. Th

MirVel
Jun 9, 20253 min read


Power Query in Excel & Power BI: The Ultimate Data Transformer
Power Query is Microsoft’s powerhouse tool for data transformation and automation, built into Excel and Power BI. If you’ve ever spent hours copy-pasting and cleaning data manually (and let’s face it, most of us have), Power Query is here to save the day. This blog post will take a casual yet detailed dive into Power Query, its benefits, and how to use it, from basic to advanced scenarios. We’ll walk through practical examples with sales, trade, and technical data, including

MirVel
May 13, 202521 min read
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